A History of ALGOL 68By C.H. Lindsey; ACM Digital Library, 1993, ISSN 0362-1340. Abstract of article from the Second ACM SIGPLAN Conference on History of Programming Languages, 1993. Full text for ACM members only.http://portal.acm.org/citation.cfm?id=155365

A comparison of PASCAL and ALGOL 68Abstract and text in TIFF form from The Computer Journal, Volume 21, Issue 4, pp. 316-323.http://comjnl.oxfordjournals.org/cgi/content/abstract/21/4/316

ALGOL 68Growing article, with links to many related topics. [Wikipedia]http://en.wikipedia.org/wiki/ALGOL_68

Algol 68 CompilerBy Aristotelis Tsirigos; designed, implemented for compiler course at NYU, goal: compiler for a subset of Algol 68 that is able to bootstrap.http://homepages.nyu.edu/~at570/compiler.html

VanWijngaarden MR76.pdfA. vanWijngaarden's MR76 paper on the orthogonal design of a language from 1965, which was the starting point of Algol 68.http://www.fh-jena.de/~kleine/history/languages/VanWijngaarden-MR76.pdf